Have installed gnome3 on an AWS Ubuntu 24.04 release (along with XRDP and appropriate security rules for the AWS instance) and I am able to remote desktop from a windows machine without any problem.

However, when i do a sudo apt-get update subsequent to this to load, for example, nodejs, i receive the following error:

ubuntu@ip-172-31-33-26:~/dev$ sudo apt-get update
Hit:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu noble InRelease
Hit:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu noble-updates InRelease
Hit:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu noble-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu noble-security InRelease
Ign:5 https://ppa.launchpadcontent.net/gnome3-team/gnome3/ubuntu noble InRelease
Err:6 https://ppa.launchpadcontent.net/gnome3-team/gnome3/ubuntu noble Release 404 Not Found [IP: 185.125.190.80 443]
Ign:7 https://launchpad.net/~gnome3-team/+archive/ubuntu/gnome3 noble InRelease
Err:8 https://launchpad.net/~gnome3-team/+archive/ubuntu/gnome3 noble Release
404 Not Found [IP: 185.125.189.223 443]
Reading package lists... Done
E: The repository 'https://ppa.launchpadcontent.net/gnome3-team/gnome3/ubuntu noble Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
**E: The repository 'https://launchpad.net/~gnome3-team/+archive/ubuntu/gnome3 noble Release' does not have a Release file.**
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

The installation of gnome 3 was done through the following commands

sudo apt install -y xrdp
sudo systemctl enable xrdp
sudo add-apt-repository -y ppa:gnome3-team/gnome3
sudo apt-get install -y gnome-shell ubuntu-gnome-desktop

If this type of question would be more appropriate on some other type of platform, please let me know.

Any thoughts on this would be greatly appreciated.